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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Environment variables.
// Setenv doesn't exist yet: don't have the run-time hooks yet
package os
import os "os"
export var (
ENOENV = NewError("no such environment variable");
)
export func Getenv(s string) (v string, err *Error) {
n := len(s);
if n == 0 {
return "", EINVAL
}
for i := 0; i < sys.envc(); i++ {
e := sys.envv(i);
if len(e) > n && e[n] == '=' && e[0 : n] == s {
return e[n+1 : len(e)], nil
}
}
return "", ENOENV
}
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